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kossuth 08-16-2011 15:24:52 214.3.115.10 Report to Moderator

buickanddeere said: (quoted from post at 12:45:48 06/06/11) The body, suspension and drive train will show wear, tear, corrosion and decay of 170,000miles and 18 years. 2WD or 4WD? Auto or standard? Tow options? Seats 3,5 or 6? The 5.3 has more HP than the 6.5 diesel and the fuel is cheaper per gallon. As for the inevitable blah, blah about diesel torque. It's the truck with the most HP per lb that makes it to the top of the hill first. HP= Torque X rpm/5252 Sir, hold on a second here. I have a huge problem with your thinking here. Yeah your formula is correct for torque to horsepower conversion but you're going about this the wrong way. Horsepower is a representation of an amount of work put out over a given time over a distance. IE turning over 5000 rpm an engine put out 300 horsepower. The true thing you want to know about as far as pulling goes is the force and engine puts out not the horsepower. Torque represents a force working on a lever. IE if an engine has 500 ft/lbs or torque that means it has the twisting power of a 1 ft bar with 500 lbs on it, or conversely a 500 ft bar with 1 lbs hanging on the end of it. Either way the force is the same. So that 5.3 gasser makes about 335 ft lbs of torque. The 6.5 at it's weakest by spec was 360 ft lbs and at it's best was about 440 ft lbs. In short the 6.5 is gonna have more grunt getting that load moving and pulling the hills than the 5.3 will. Everybody gets wrapped up about HP numbers, when pulling trailers or just dogging the snot out of an engine by loading it down it's all about torque not horsepower. This post was edited by kossuth at 15:28:35 08/16/11. [Reply]   [No Email]